Whenever we drive past a big house like that, my wife always says "I'd never want a house that big, I'd never be able to keep it clean".

The fact she has a maid to clean our normal sized house seems to be lost on her... You gotta love women.

Yes, but what you probably don't get is that someone has to tell the maids what to do and to make sure they do it. Translation, a bigger house is harder for the mistress to keep clean. Your wife is right.